ASTROSAT CZTI

Data Quality Report

Orbit 36165

Creation date: 2022-06-07T13:18:08.817801
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_059T08_9000005160_36165cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36165cztM0_level2_quad_clean.evt
Size (bytes)468,146,88059,218,560
Size446.5 MB 56.5 MB
Events in quadrant A2,861,410346,097
Events in quadrant B3,439,208360,912
Events in quadrant C3,275,298343,924
Events in quadrant D4,196,378324,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122503
B0139402
C0132142
D0164932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5974100.167392%
B59741121.874791%
C5974320.535655%
D59742343.916974%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7287 5975 0 0 0.00% 0.00%
B 7287 5975 61 61 0.84% 1.02%
C 7287 5975 22 22 0.30% 0.37%
D 7287 5975 202 202 2.77% 3.38%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 185221 1313.89 686 670 140.5
A 8 144 13121 88.64 686 670 140.5
A 13 254 11191 74.9 686 670 140.5
B 5 172 319453 2429.19 679 661 131.2
B 15 32 166582 1264.31 679 661 131.2
B 0 190 89564 677.44 679 661 131.2
C 15 214 271329 1727.06 669 673 156.7
C 0 10 197760 1257.62 669 673 156.7
C 0 207 120364 763.75 669 673 156.7
D 12 17 527835 3216.21 664 645 163.9
D 2 249 347983 2118.99 664 645 163.9
D 2 153 202416 1230.94 664 645 163.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter